Can we avoid Grouping row count in Grouping datatable ?

Angular Grouping Datatable -

If their are 20 records in Brand column.

-When we group brand column then all the records will be in one row - count:1 -If we split this brand grouping - count:21

because one is brand group node and others 20 are records. For this can we avoid counting the grouping row so that we can see only records count?

Pagination is displaying 21 items in one page because it is including group header row as well.

The datatable has search option for every cell. If we search in individual cell, it should show result records.

Please let us know the solution for this. Thank you